Publications Scientifiques

[ Article ] Spatial distribution of bowal and differences in physicochemical characteristics between bowal and woodland soils in Benin, West Africa

Date de soumission: 22-09-2016
Année de Publication: 2015
Entité/Laboratoire Laboratoire de Biomathématiques et d'Estimations Forestières (LABEF)
Document type : Article
Discipline(s) : Agriculture & Agronomie
Titre Spatial distribution of bowal and differences in physicochemical characteristics between bowal and woodland soils in Benin, West Africa
Auteurs
Journal: Catena
Catégorie Journal: Internationale
Impact factor: 2.82
Volume Journal: 124
DOI: 10.1016/j.catena.2014.08.022
Resume Bowal, is degraded land surface characterized by ferricrete exposure due to soil surface erosion. This study aims at assessing the spatial distribution of bowé in Benin and the physicochemical differences between bowé and soil of adjacent woodlands. Bowé surfaces were identified during field investigations and mapped. Soil samples were taken on the bowé surfaces and nearby woodland. Mann–Whitney test was applied to analyze the different physicochemical characteristics of bowé and woodland. The results show that bowé were directly related to fer- ruginous soils and rainfall regime. Bowé soils are characterized by significantly lower values of electrical conduc- tivity, organic matter, extractable phosphorus, silt and total nitrogen than woodland soils, while potassium exchangeability of bowé soils is higher. Bowé can be expected wherever ferruginous soils and/or ferricretes are observed under unimodal rainfall regimes condition. The disaggregation of bowé ferricretes may improve the soil physicochemical characteristics and sustain the regrowth of forest under more humid conditions.
Mots clés Bowal, Ferricrete, Ferruginous soil, Physicochemical soil characteristics, Phytogeographical district, Benin
Pages 45 - 52
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